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MHJCATIDN FILED 118.17 |919.

Patented Oct. 14, 1919.

2 SHEETS-SHEET 2.

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EDWIN W. WEBB, or CHICAGG, ILEINOIS, .SSIGNoR-Twsfra-Npnatn CARTRUW COMPANY, 0F cHIcnfG'o, ILLINOIS, AICORPDMTIGN'OF'NEWWERSY i man lz?" ANrIFItIcTI-@N smn BEARING.

'specification nf Letters Patent. Patented ),etft'ifll'jl) Application filed February 17, erlial No. 27725143' To all 'whom-it -mayconcerm Be it 'known that I, EDWIN W. Wren, a citizen ofthe UnitedStates, lresiding at Chicago, in the county ofCook land State of Illinois, have invented certain new and vuseful Improvements inAntifric'tion Side Bearings; and I do vhereby decarethe Yfollowing to be a full, clear, and exact description of the invention, such as will enable others Skilled in -the art to which it appertains to malte and use the same. Y

Myinvention relates to side 'bearings for cars, of the type whereby; the anti-friction member is returned to normal ,position a` weighted gravity-actuated member.

In experimenting 'withithis type oi antifriction side bearings, Iliave found that when al roller-returning member, in the form of a pin or holt, arranged 'to roll directly on aides, is used to gravityfretur-nan antitriction 'member to normal position, the same is very noisy, and, therefore, renders the enbiredevice objectionable. To overcome this objectionable feature, I rovide the roller-returning member with re atively large wheels that are in constant rrolling engaoement with the uidee or track rails provi ed therefor. hes'e wheels, lby their added Weight -to the rollerreturning member, cause the fsame to be more positive in its action, and also constantly -hold said member on the guides, so that 1t will roll quietly thereon. y

To the above end, theinvention 'consists of the novel'devices and combinations eide; vices hereinafter described and defined in the claims. f

In the accompanyingdrawings, which illustrate the invention, like 'charaeters'indicate like parts throu hout theseveral views.

Referring t0 the rawings, 4

Figure 1 is a plan'view of the improved device; v

Ffg. 2 is a side elevation of' the same;

Fig. 3 is a' vertical sectionitaken" on the l-neB-B of Fig. 1;

Fig. 4 is a vert-ical section taken on the line 4 4: of Fig. 1';

Fig. 5 is -a transversesection taken on the line 5--5 oFF-ig. 2; and

`Fig.'6 is a fragmentary view corresponding to Fig. 3 with the anti-friction member moved to one of itsenbremepositions.

The numerals =7 and -8 replcsen't, respectively, portions of the truck bolster and iele m :10A-menate eenen-.11n upper 4Vbearingfplie @reunirsefeier-idd"by the' body' .holsteriifandlaz ower ,hearmgvplatb Carried by. the trede-bel 8.-. Ah'antifrCPiQ-amm visintenweedfbe tween, l 4the,bearing sur and, LQ- and as are inserted tln'ough bergerie-.t Qe .bottom of th@ homme-1.3 l@wd-- lugar-.16, andfiheirfhea @Verlap thnds.Qfwthelmrng lulabeilO and 'there'bjf .hold 5 Athe .saine ,r-against; lifting mowmen'b fromilie'bettem ef eedrmueine- 'integrally @med with. bh-inne WML-.Gf each -Side `0f .the housing @'13, Eis aiiz'ndless flange 18. The lower,p0l4.i9nsof thesetwo lianffes aordsepairfeffguides or track r'glfi'lS 19 at are inclinbd'eeaaleaends .withalcenters. In j '-.acl1side[off-y the y housing-l, .Within the respective-endless :Harige .l8,i s an' annularoening 20, the vertical axisof which isatnt, e'center off-the track railli) thereof. Y Two oppositely -zprojeting notches or short channels 21 extend from each open'f ing.20 on radial .linee thatmreiparallelgto the inclined surfaces fof tllestrack railsfl. f

To return the rolflerfll to, normal position, there, 1s provided ia. .weightedcenteringpin 22 and .a pair of'wheels 234111211; havero'lling en?Y gagement ywith the guides or traekrails 19, The .pin -22 `isof anluch smaller 'diameter than the axial opening 124through' which vit projects, 13o-.permit free radial movement of th'e roller 1fl with' 4respect thereto. The Wheels 23also have-a fsmaller diameterthan the openings-12, to permit:therollelreturnving membel` to be axially 'inserted therethrough to and' from operative positions.- As shown, the wheels 23 are cast integral with-the pin-22sli1ghtl iwer'd of its4 ends. The projectinlg1 en s o the pin 22 normal-1y Proievmbort. e e nngs .andwhen the roller 11 .is Ingvierl sufficiently, to carry the wheels 23 of the roller-returning member onto either of the inclines of .the track rails 19, said projecting ends enter the respective channels 21sY 5,

' To lpermit the escape-Hof Water, dirt, ice

and snow from the Housing 13, there is formed in the sides thereof openings 24, the bottoms of-'which 'areflielo'w the u per s'urface efthe flower' bearing 10. lljnder extreme movements oftherollerll, the upper inturned edges' of the ends'of -the housing 13 afford stops 25 therefor. The, end portions of the flanges 18 afford stops for the Wheels 23 and thel outer extremities of the notches or channels l21 affordstopsfor the In the norme] position of the roller 11, the pin 22 restson'the Vinner surface thereof and the wheels 23, as previously'stated, rest on both offthe inclines of the @tracks 19. The roller-returning'nember is held a ainst endwise disp laceinent"fffm the rol er 11 and housing 13 vby its wheels 23, which extend belowthe bore 12 in'said roller and the openings 20 in said housing. f

In case the roller 11 is engaged by the upperbearing plate 9, when the ear truck is on a curve,fsa`id Aroller''Will"b`e moved 'thereby on the lower bearing plate 10 and carry with it the pin22, therebyfcau'sing the wheels 23 to move upward on the respective inelines of the flanges or track rails 19',l If the upper bearing plate 9 continuesto rest upon the roller 11, until the car 'truck passes beyond the curve, said rollerwilllbe returned to normal position under the action of the two bearing plates 9 andi/10.' B u't if the bod; bolster should lift'witli respect to the truc bolster and thereby `carrythe upper bearing platef 9 out-ofenga-gement with the roller 11,'fvyhilethe-sameis on one of the inclinesfofgthe idesr or'- tracks i 19, said roller-centering evicefwill, under the actionof gravity, ro'll downithejrespective mf elines, and; Ebyl 'its n,ga,3,ement` with' the roller 11, return" the' same to normal posi- 'In-assembling" the improved side bearing, the roller llis lirsl'gplaced`- in the housm 13 andxsupported on the bottom thereo Inthis pisti'c'inl 'of the roller 11, the open- 16. Next, the'rivets '17 are posltoned'n the bores provided therefor and upset to secure the bearingfplate 10 in osition.;a ,With the roller 11,supportedY on te bearing plate 10, its opening 12 is out of alinement with tbe openings 20, and, to prevent the rollerre turning member from being lifted and moved ,endwise through the roller 11, dependingl lugs 26 are formed on the flanges 18, as estfshown in4 Figs. 4 and 5. Obviously, the member 10 not only serves as a bearing plate for the roller 11, butacts as a lock to prevent displacement of the antifriction member and its returning member. Preferably, the roller l1 is 'cored out at 27. 4"What I claim is:

1. In anfsmti-friction side bearing, the combination with upper and lower plates, of,v an interposed roller,`fside Walls associated Withthe lower bearim'gA plate and provided with guides inclined from both ends to the center, and'a roller-returning member' having 'on its ends Wbeelsin rolling engagement with said guides, said rollerreturning member' *loosely engaging said roller and arranged Vby gravity to return the same to a central position.

2. In an antifriction side bearing, the combi'nationwith upperand lower bearing plates, of an 'interposed roller, side 'walls associated With'the lower bearing plate and provided with guides inclined froln'both ends to the center, and a Weighted centerin member loosely engaging said roller an having on its ends Wheels in rolling engagement with said guides.

3. In an anti-friction side bearing, the combination with upper and lower bearing plates, of an interposed hollow roller, or annular anti-friction member, side walls associated with the lower bearing plate and provided with guides inclined from both endsto the center, and a roller-returning member loosely engaging said roller from the inside and 'having Eon its ends'wheels in rolling engagement' with said guides.

4. In an anti-'friction side bearing, the combination with upper and lower bearing' plates, of 'an interposed hollow roller or annular anti-frietion member, side walls associated with'the lower `bearing plate and provided with guides andy openings above said ides, said' ides being inclinedrom th ends to t e center, and a roller-returning vmember loosely engaging said roller from theinsideIand having mward of its ends wheels in rollingengagement with the guides, the projectingrends of said rollerreturmng member extendingrintothe o enings in 'said side members and 4arrang to engage the ends thereof to limit'the traveling movement' of saidA member in either direction.

5. In-an anti-friction side bearing, .the combination with upper and lower'bearing bearing :memo i plates, of an inte oeed roller, side walls in the centered position of thex'ger '625111917' associated with the ower bearing plate and Y non d to rest on the guides at both eide@ provided with guides inclinedfrom bot-,1i "'ot e center. ends to the center, and a roller-returning In testimony whereof eix my elgna.- Y 5 member having on its ends Wheels in rollture in presence of two wltnesses. Y 17 ing engagement with seid guides, said rolle- EDWIN W. WEBB. returning member loosely engaging said Witnesses: vroller and arranged by gravity to return F. L. BARBER, the same to a central position, said whees H. E. ORB.

opiel n! this patent muy be obtained for ve oeste each, by addressing the "Gomminioner' n! Intente,V Y

Washington, D. c. Y Y 

